(Britain) Ellipsis of if the cap fits, wear it.

(slang) To become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc.

(idiomatic) To provide a thing, a group, a person or oneself with requisites; to kit out.

plural of fitting room

(criminology, slang) Conspire to incriminate falsely a presumably innocent person. / To furnish with suitable things; to prepare; to fit out.

plural of hissy-fit

Third-person singular simple present indicative form of fit the bill

present participle of fit the bill

to deem appropriate

simple past tense of see fit